L-10 Mail is an open-source email client for Android, based on K-9 https://github.com/k9mail/k-9/releases/tag/5.734 but without battery consumption always-on-IMAP sync. That's why it's more energy efficient. Additional you can optional transfer password to an new device.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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