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https://github.com/edmundhung/maildog

ðŸķ Hosting your own email forwarding service on AWS and managing it with Github Actions
https://github.com/edmundhung/maildog

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ðŸķ Hosting your own email forwarding service on AWS and managing it with Github Actions

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README 

        
# maildog



> ðŸĶī Hosting your own email forwarding service on AWS\

> ðŸķ Managing with Github actions\

> ðŸĐš Monitoring and failure recovery included\

> 🍖 Almost free\*



## 👋 Hey, why building this?



Since I bought my first domain, I am always tempted to use it as my email address.

However, as I am not receiving many emails a day, hosting my mail server or paying for an email hosting service either make it too complicated or costs too much.

All I want is simply a service forwarding emails to one single place.



I have been happily using [mailgun](https://www.mailgun.com) for years.

As they changed pricing last year, I started looking for a replacement but options are relatively limited.



After all, I open-sourced `maildog` and is looking for a community that shares the same needs as me.

The project aims to offer an extensible email forwarding solution with minimal maintenance and operational cost.



## ☁ïļ How it works?



[![MailDog Architecture](docs/architecture.png)](https://app.cloudcraft.co/view/d3b3c7fb-3e31-445c-ae5a-3fd3cf5080d6?key=VbwNoP3q1N5efAlrXGHK2Q&interactive=true&embed=true)



> Hint: you can click on the diagram for higher resolution



## ðŸ’ļ Pricing



Yes. While it is **FREE** to use `maildog`, you are still required to pay AWS for the infrastructure setup on the cloud.

To give you a better idea, here is an **estimated** price breakdown based on the following assumption:



- 10k emails / month or 333 emails / day

- 100KB mail size in average

- Hosted in US West (Oregon), pricing may be slightly different based on the region

- Counted without any [free quota](https://aws.amazon.com/free)



| Component   | Service             | Configuration summary                                                                                                                                                | Monthly   | Currency |

| ----------- | ------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------- | -------- |

| Bucket      | S3 Standard         | S3 Standard storage (1 GB per month, depends on the retention policy)                                                                                                | 0.080     | USD      |

| Mail Server | SES                 | Email messages received (10000), Average size of email received (100KB), Email messages sent from email client (10000), Data sent from email client (1 GB per month) | 2.120     | USD      |

| Mail Feed   | Standard SNS topics | DT Inbound: Not selected (0 TB per month), DT Outbound: Not selected (0 TB per month), AWS Lambda (10000 per month), Requests (10000 per month)                      | 0.010     | USD      |

| Dispatcher  | AWS Lambda          | Number of requests (10000, with no retry attempt)                                                                                                                    | 0.100     | USD      |

| Scheduler   | AWS Lambda          | Number of requests (< 10000)                                                                                                                                         | 0.100     | USD      |

| DLQ         | SQS                 | Standard queue requests (< 10000 per month)                                                                                                                          | 0.004     | USD      |

|             |                     |                                                                                                                                                                      | **2.434** | USD      |



> As of 30 June 2021, estimated using [AWS Pricing Calculator](https://calculator.aws/#/estimate?id=f5b7c2a46317a99bfb149569d601e7e285504b4c)



## ðŸšĻ Limitations



### Amazon SES sandbox



SES restricts new users by placing them in the sandbox.

Depends on your usage, if you would like to forward emails to [non-verified addresses](https://docs.aws.amazon.com/ses/latest/DeveloperGuide/verify-email-addresses.html)

or with higher volume, you might want to [move out of the sandbox](https://docs.aws.amazon.com/ses/latest/DeveloperGuide/request-production-access.html)



### Maximum numbers of domains/alias allowed



`maildog` configures SES using a receipt ruleset with a [hard limit](https://docs.aws.amazon.com/ses/latest/DeveloperGuide/quotas.html) of up to 200 rules and 100 recipients per rule. In general, domains that are configured with fallback emails could be set with only 1 rule using wildcard. But for domains without fallback emails, every 100 alias will be count as 1 rule. As a result, you can set up to 20,000 alias if you are configuring only 1 domain even with no fallback emails.



### Regions support



Not every region supports receiving emails with AWS SES. As of 30 June 2021, only 3 regions you can deploy `maildog` on:



1. US East (N. Virginia)

2. US West (Oregon)

3. Europe (Ireland)



Please check the [AWS documentation](https://docs.aws.amazon.com/ses/latest/DeveloperGuide/regions.html#region-receive-email) for the latest update.



## ðŸ“Ū Give it a try?



You can find the installation guide [here](docs/installation.md). The setup might take 10-20 minutes.