About this agreement
This Service Agreement is between you and GoMatrix Tech Internet Co., Limited ("Lettura", "we", "us", or "our"). It applies to the Lettura application, this website, and the related letter-writing services we provide. Our contact email is support@lettureapp.com.
You must read and accept this agreement and its community standards before creating a Lettura account or using correspondence features. Acceptance includes the age requirement, the prohibition of objectionable content and abusive conduct, and our authority to remove violating content and suspend or terminate offending accounts. If you do not agree, do not create an account, submit content, or use the service.
Our Child Safety Policy forms part of these standards. The Privacy Policy explains how information is handled; acknowledging it does not provide blanket consent to unrelated data uses or replace a separate permission required for sharing personal information with a third-party AI service.
For the iOS application distributed through the App Store, Apple's Standard End User License Agreement (EULA) governs the application licence unless a custom licence is provided in the App Store listing. This Service Agreement adds the terms for Lettura accounts, correspondence, and community conduct. It does not replace the applicable App Store licence terms.
Any separate permission or consent required by law remains necessary. Mandatory consumer and privacy rights take precedence over anything in these terms.
Eligibility and your account
You must be at least 18 years old, have the legal capacity to accept this agreement, and be legally permitted to use the service. A parent or guardian cannot authorize use by someone under 18. Enter your actual birthday. Our birthday check relies on the date you provide and is not independent identity or age verification.
The age requirement applies to accounts and correspondence. Anyone may read these policies or contact us about a safety or privacy concern.
Lettura requires a supported Google or Apple sign-in account, or a phone number verified through Firebase Authentication. Your profile, letters, and replies are associated with your Lettura account. Protect access to it, use accurate account information, and do not impersonate someone, falsify your age, share or sell account access, or evade a suspension or ban. You are responsible for your own conduct and for reasonable steps to secure your account; this does not make you automatically liable for every unauthorized action by another person.
Phone sign-in is an independent registration and login method. After verification, you enter the existing account associated with that phone sign-in or, if there is none, create a new account and complete the registration requirements. You do not need a Google or Apple account to register by phone. Phone sign-in does not automatically combine separate accounts or move letters, friendships, flowers, or stamps between them.
Use only a phone number you control. Requesting an SMS code sends the number to Google through Firebase Authentication. Google receives and stores it for authentication and spam and abuse prevention across Google services, including Firebase. The Privacy Policy explains this processing; any required consent must be obtained before the number is submitted. Verification SMS messages may be sent, and your mobile operator's standard message or data charges may apply. Availability depends on supported regions, service limits, and security checks. Phone verification confirms access to the number, not a person's legal identity or age. Protect your phone, SIM, and verification codes, and contact us if you lose access to your sign-in number or it is reassigned.
Contact support@lettureapp.com if you suspect unauthorized access or need help correcting account information. We will never ask you to email your Google or Apple password or a one-time sign-in code.
Letters, delivery, and personal boundaries
Lettura provides written correspondence between registered accounts. An original letter may be delivered through Discover to several readers. Each reader chooses whether to reply; a reply can open correspondence between two participants, and later exchanges remain in that correspondence. Your display name, pigeon avatar, country, and chosen stamp can appear with your letters. Letters and replies remain linked to the sending account for service operation and safety enforcement.
Readers choose whether to reply or accept a friendship invitation. Delivery, a particular recipient, replies, friendships, and response times are not guaranteed. Sending limits and allocation rules help manage the service and may be shown in the app.
Unsent original letters and replies exist only in the active editor. There is no manual saving, autosaving, or draft restoration. Closing the editor discards unfinished text.
For a sent original letter, Stop future delivery stops new Discover deliveries. It does not erase existing correspondence or recall delivered copies.
Respect other people's boundaries and exercise care before sharing identifying information, sending money, or moving a conversation to another service. Lettura does not independently verify every user or endorse their statements. It is not a medical, counselling, or emergency service.
Your content and our limited permission
You keep the intellectual property rights you have in the words and other content you submit. You grant us a non-exclusive, worldwide, royalty-free permission to host, reproduce, transmit, format, and display that content only as needed to provide the service, maintain correspondence, investigate misuse, and meet legal obligations. Providers working for us may process it only for these purposes.
This permission is limited to the uses and retention described in our Privacy Policy. It is not a transfer of ownership or permission to sell your writing, publish private letters in advertising, or use them for unrelated purposes. It continues after account closure only to the extent needed for lawfully retained correspondence, safety records, or legal obligations.
Submit only content you have a right to share. Do not disclose another person's confidential information or infringe their copyright, privacy, or other rights. Recipients do not acquire a general right to republish your correspondence. Lawful reporting, evidence preservation, and other uses permitted by law are not prohibited by this clause.
Community standards and prohibited conduct
Lettura has zero tolerance for objectionable content and abusive users. The adult age requirement does not permit pornography, exploitation, threats, harassment, or other prohibited conduct. These standards apply to original letters, replies, profile information, links, and behaviour connected to the service.
You must not use Lettura to:
- Harass, stalk, threaten, exploit, or target someone with hateful or discriminatory abuse.
- Publish or send pornographic or sexually explicit content, unwanted sexual material, coercive sexual requests, or intimate material without the subject's consent.
- Engage in child sexual abuse or exploitation, grooming, sexual extortion, or any conduct prohibited by our Child Safety Policy.
- Commit fraud, impersonate others, solicit money through deception, distribute spam, or send unwanted commercial promotions.
- Expose private information, distribute graphic abuse or violence, facilitate violence or trafficking, or promote or coordinate unlawful harm, terrorism, or self-harm. Seeking help or discussing difficult experiences respectfully is not itself a violation.
- Distribute malware, access another person's account, scrape private correspondence, bypass security or service limits, or automate abusive activity.
- Retaliate against a reporter, evade a restriction, or knowingly submit false reports.
These rules apply to text, links, profile information, and conduct connected to Lettura. Moving harmful conduct to another platform does not prevent us from addressing a credible risk to Lettura users.
Content that violates these standards is subject to removal or disabled access, and the responsible account is subject to suspension or termination. Repeated abuse, severe violations, or attempts to evade enforcement may result in permanent exclusion from Lettura.
Reports, restrictions, and appeals
Filtering before delivery
Original letters and replies undergo automated content-safety review before they are made available to other users. The review uses Google's Vertex AI service to assess the submitted text for prohibited content. Content that fails this review is withheld from recipients. Automated review can make mistakes and does not replace user reports or the developer's responsibility to act on violations. The Privacy Policy explains the information used for this review.
Report a concern
Choose Report user in the relevant letter or conversation menu, or email support@lettureapp.com with the account involved and a brief description. For concerns involving a child, follow the child-safety reporting steps. You can report without also choosing to block.
You can also open Me → Settings → Feedback, choose Safety report, and describe the concern. A report from the relevant letter helps identify the source content directly. When using Feedback, include the account or display name, the relevant interaction, and an approximate date so we can locate it. Feedback does not automatically attach the correspondence, block a user, or remove a letter.
No account or access to the app is needed to report by email. Include enough information to locate the concern, such as the account display name, the relevant letter or conversation, when it happened, and a description. Do not send passwords, verification codes, or illegal material. Opening an email link does not send a report; send the message to submit it.
Block further contact
Block prevents further interaction through the available controls. It is permanent in the current version and does not recall delivered content. A block alone does not submit a report. Do not use another account or another person to bypass a block or a request to stop contact.
How restrictions are handled
We undertake to review reports of objectionable content or abusive conduct within 24 hours of receipt. When a violation is confirmed, we will remove or disable access to the violating content and suspend or terminate the responsible account within that period. Child-safety concerns, credible threats, and other urgent risks receive priority and may require immediate protective action.
These are Lettura's moderation responsibilities. A report is assessed on the available information; reporting alone does not establish that the reported person committed a violation. We may restrict content or account access while assessing a credible risk. Removal from the service does not erase independent copies a recipient has made, and necessary legal preservation or reporting may continue separately. We may act before notifying the responsible user when safety, security, or law requires it.
The same safety-response commitment applies to concerns received through in-app reports, the Feedback safety topic, and our support email. A successful submission confirms receipt, not that review or enforcement has already happened. General suggestions and ordinary technical feedback do not carry a guaranteed 24-hour resolution time.
Appeal a decision
If you believe a restriction is mistaken, email support@lettureapp.com. Include the account concerned, the decision or notice if available, and the reason you disagree. The suggested subject is “Lettura account appeal”; no special wording or access to the restricted account is required.
Opening an email link does not submit an appeal: you must send the message. If the link does not open an email app, write to the address shown above. Do not include passwords, verification codes, or illegal material.
We will consider relevant information and explain the outcome where possible. An appeal does not automatically restore access. Details may be withheld to protect another person's privacy or safety, preserve an investigation, or comply with law. Contacting us does not limit your legal remedies.
Flowers, stamps, and paid features
Flowers are an appreciation feature, and stamps are digital collectibles usable within Lettura. Their availability and earning or redemption rules depend on the current features. They are not money, financial assets, or physical postage, and cannot be exchanged for cash or sold outside the service. Account deletion ends your access to account-linked collectibles.
The current version does not offer paid memberships, subscriptions, or purchases. These terms do not authorize a future charge. If paid features are introduced, we will present the price and relevant payment, renewal, cancellation, and refund terms before a purchase.
Platform materials and rights complaints
Lettura's software, artwork, brand, and interface belong to their respective rights holders. You receive permission to use the service for your personal use as provided, not to sell or commercially redistribute those materials. Open-source components remain subject to their own licences. Restrictions here do not override uses that applicable law permits.
For the iOS application, consult the Standard EULA for the application licence and its terms concerning use, warranties, and responsibility. GoMatrix Tech Internet Co., Limited is responsible for operating Lettura and handling Lettura support and content-safety concerns. Apple is not the operator of our correspondence service. You must also comply with applicable third-party terms when using their services.
To report infringement, email support@lettureapp.com with your contact information, the work or right involved, where the disputed content appears, and why you believe the use is unauthorized. Explain whether you are the rights holder or an authorized representative. Do not attach illegal material or disclose unrelated private correspondence. We may request information needed to assess the claim and comply with applicable notice procedures.
Deleting your account
Open Me → Settings → Delete account and follow the confirmation and any required sign-in verification. A phone account may require a fresh SMS code for its sign-in number. If registration is incomplete and you cannot reach Settings, or you cannot use the app or access that number, follow the email deletion instructions; provide the account email, sign-in provider, or phone number including its country code if known. You do not have to finish registration to request deletion. Do not email passwords or verification codes. Signing out or uninstalling alone does not delete your account.
Your request covers the account and its associated personal information; you do not need to list every record or apply twice. Deletion removes its Firebase Authentication identity and starts background cleanup of private account information, collections, feedback submissions, and related records. It does not close your Google or Apple account or cancel your mobile service. Correspondence already delivered to another user can remain in that recipient's history, together with the sender identity shown at delivery and necessary relationship references. The retention section explains what is removed, what can remain, and when a lawful reason for retention is required.
After the old authentication account is deleted, successful registration with the same phone number or sign-in method creates a new account. It does not reactivate the old account or restore its letters, relationships, collections, or feedback. You must meet the registration requirements again. Creating another account to evade a block, suspension, or other safety restriction is prohibited.
Account deletion does not recall delivered letters or erase independent copies made by recipients. Contact us if data remains or you need an explanation of a retention exception. Clauses concerning lawfully retained content, intellectual property, outstanding responsibilities, and disputes continue only while their subject matter requires.
Availability, changes, and responsibility
Maintenance, network problems, provider outages, and security work can interrupt access. We may update or discontinue features for operational, safety, or legal reasons. Where reasonably practicable, we will give notice of significant changes affecting existing use. We do not guarantee uninterrupted or error-free operation, a particular response from another user, or the accuracy of user-supplied information.
Each party is responsible to the extent applicable law provides. Nothing here excludes liability that cannot lawfully be excluded, including liability for fraud or other conduct for which the law requires responsibility. These terms do not remove statutory guarantees or prevent you from seeking available remedies.
We will identify revisions by their date and provide appropriate notice of material changes before they apply, except where urgent legal or safety needs require otherwise. Revised terms apply prospectively. Where law requires agreement or consent, posting a revision alone is insufficient.
Disputes and interpretation
You can contact support@lettureapp.com to seek an informal resolution. This is voluntary and does not prevent you from approaching a regulator, seeking urgent relief, or bringing a claim in a court available under applicable law. This agreement does not impose mandatory arbitration, a class-action waiver, or an exclusive foreign court.
Applicable law determines the law and courts relevant to a dispute, including any mandatory protections in your country of residence. If a provision cannot be enforced, the remainder continues to apply to the extent lawful. A delay in enforcing a right does not waive it. We will not transfer our obligations in a way that reduces your mandatory rights.
Contact
In-app feedback: open Me → Settings → Feedback, select a topic, write your message, and choose Send feedback. Available topics are App issue, Feature idea, Account help, Safety report, and Other. This form requires an active account with completed registration. Submissions are stored privately in Firebase and associated with your account, as described in the Privacy Policy.
An email address is not required to send in-app feedback. There is currently no in-app reply inbox; if you need a reply, use the email link at the bottom of the Feedback page or write to the address below. Do not include passwords, verification codes, unnecessary sensitive information, or illegal material. Use the account-deletion controls or email deletion instructions to request account closure.
Operator: GoMatrix Tech Internet Co., Limited.
Support, inappropriate-activity reports, account help, and appeals: support@lettureapp.com. You may contact us without creating an account or signing in.
For data access or deletion, follow the privacy request instructions. For a child-safety concern, use the reporting steps. Do not wait for a service response if someone is in immediate danger; contact the appropriate emergency services.